Home / 7,834.79-11,752.49-1,991.25

Finding the Fourth Proportional to 7,834.79, 11,752.49 and 1,991.25

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Solution

The fourth proportional to 7,834.79, 11,752.49 and 1,991.25 is: 2,986.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,834.79 : 11,752.49 = 1,991.25 : x
  2. Step 2: Convert to fraction form
    7,834.79/11,752.49 = 1,991.25/x
  3. Step 3: Cross multiply
    7,834.79x = 11,752.49 × 1,991.25
  4. Step 4: Simplify right side
    7,834.79x = 23,402,150.69
  5. Step 5: Solve for x
    x = 23,402,150.69/7,834.79
  6. Step 6: Final answer
    x = 2,986.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.